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2010 Vauxhall Corsa Over heating

Tiny
CRAGGA
  • MEMBER
  • 2010 VAUXHALL CORSA
  • 1.3L
  • FWD
  • MANUAL
  • 116,000 MILES
My corsa is over heating due to losing coolant fluid but I cannot find a leak I've added coolant to it twice this week and even put radweld in but still losing and over heating? What are possible problems and more likely ones
Wednesday, July 1st, 2015 AT 1:11 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,864 POSTS
When there's no obvious external leak, the most likely suspect is a leaking cylinder head gasket. You can verify that by adding a small bottle of dark purple dye to the coolant, then checking a day later with a black light. The dye will show up as a bright yellow stain that you can follow back to the source. If the head gasket is leaking, you'll find the dye inside the tail pipe.

Auto parts stores will have the dye, and those that rent or borrow tools will have the black light.
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Wednesday, July 1st, 2015 AT 1:23 AM

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